# How to Write a UX Case Study

> The structure and narrative that turns design work into a compelling story—the foundation of a strong design portfolio.

*Tags: ux, processes, junior*

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> [!info] Quick Definition
> The structure and narrative that turns design work into a compelling story—the foundation of a strong design portfolio.


## What is a UX Case Study?

A UX case study tells the story of a design project from problem through solution to impact. It's not a portfolio piece showing pretty mockups. It's a narrative explaining your thinking, decisions, and results.

A case study answers: What was the problem? Why did it matter? How did you solve it? What did you learn? A strong case study shows your process, not just your output.

**One sentence punch:** A case study transforms "here's what I designed" into "here's how I thought, and here are the results."**

## Why Case Studies Matter

- **Shows Your Process** — Employers want to see how you think, not just what you produce. Process reveals thinking.
- **Demonstrates Impact** — A case study that ends with "5% conversion improvement" is stronger than one ending with "I designed this."
- **Tells a Story** — Stories stick. Data disappears. A narrative about solving a problem sticks with hiring managers.
- **Differentiates You** — Anyone can show designs. Few show thinking. Case studies separate junior designers from senior ones.

## Case Study Structure

1. **Introduction** (1 paragraph) — What was the project? Why does it matter?
2. **Problem** (2-3 paragraphs) — What was broken? What did users struggle with? Why was it worth solving?
3. **Research** (2-3 paragraphs) — How did you understand the problem? What did you learn from users?
4. **Solution** (3-4 paragraphs) — What did you design? Why did you make those choices? Show key screens/mockups.
5. **Results** (1-2 paragraphs) — What was the impact? Numbers are powerful (conversion, retention, engagement).
6. **Learnings** (1 paragraph) — What would you do differently? What did you learn?

## Writing Tips

- **Show your thinking, not just your output.** "I designed a button" is boring. "I tested three button colors and found blue had 15% higher click rate, so I chose blue" is interesting.
- **Use data where possible.** "Users said navigation was confusing" is okay. "80% of users took 4 clicks to find the feature; after redesign, 1 click" is powerful.
- **Include process visuals.** Show wireframes, sketches, user journey maps. The journey is interesting, not just the destination.
- **Be honest about constraints.** "We redesigned within the existing codebase, which prevented X" is credible. Never claim impossible feats.
- **Show iterations.** "First attempt was rejected because of Y. Second attempt addressed Z. Final solution combined the best of both."

## Common Mistakes

- **Too much focus on final design** — Case studies that are 90% mockups and 10% process are weak. Reverse the ratio.
- **Missing numbers** — "Improved engagement" is vague. "Improved engagement by 23%" is concrete.
- **No failure or learning** — Case studies that claim everything worked perfectly are unbelievable. Show challenges.
- **Unclear problem statement** — If the reader doesn't understand why the problem matters, they won't care about the solution.
- **Incomplete research explanation** — How many users did you interview? What did you ask? Show your work.

## Mentor Tips

- **First tip: Case studies are 30% outcome, 70% process.** The best case study isn't the biggest project. It's the one with the clearest thinking.
- **Make it scannable.** Not everyone reads word-for-word. Subheadings, bolded key points, and visuals let skimmers understand the key narrative.
- **Tell the story chronologically.** Walk the reader through your thinking as it happened. Suspense and discovery feel more real.
- **Proofread obsessively.** Typos in a case study scream carelessness. Your writing is part of your design.

## Resources and Tools

- **Books:** "Resonate" by Nancy Duarte (storytelling), "Show Your Work" by Austin Kleon
- **Tools:** [[Figma]] for presentations, Medium or personal blog for publishing
- **Articles:** Case study guides on Nielsen Norman, portfolio tips on [[UX Collective]]

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Source: https://www.fernandoux.com/en/wiki/processes/case-study/